Then node_modules/bin/roy -r helloworld.roy works fine, but node_modules/bin/roy helloworld.roy fails with the following:
Error: ENOENT, no such file or directory '/home/uuu/node/lib/prelude.roym'
at Object.fs.openSync (fs.js:338:18)
at Object.fs.readFileSync (fs.js:182:15)
at exports.loadModule (/home/uuu/node/node_modules/roy/src/modules.js:28:32)
at /home/uuu/node/node_modules/roy/src/compile.js:667:31
at Array.forEach (native)
at Function._.each._.forEach (/home/uuu/node/node_modules/roy/node_modules/underscore/underscore.js:74:11)
at Object.main (/home/uuu/node/node_modules/roy/src/compile.js:666:11)
at Object.<anonymous> (/home/uuu/node/node_modules/roy/roy:2:26)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)